<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root">
        <h2>今天天气很{{info}}</h2><br>
        <button @click="changeWeater">切换天气</button>
    </div>

    <!-- 引入Vue -->
    <script src="../js/vue.js"></script>
    <script>
        Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。
        
        new Vue({
            el:'#root',
            data:{
                isHot:true
            },
            methods: {
                changeWeater(){
                    this.isHot = !this.isHot
                }
            },
            computed:{
                info(){
                    return this.isHot ? '炎热' : '寒冷'
                }
            }
        })
    </script>
</body>
</html>